acolic
Senior Member
Of course, one day into a 7 day road trip and I get a check engine light.
It’s telling me I have a PO303 misfire cylinder 3.
Also noticed that Eco mode is not switching on.
The truck still seems to be driving pretty well although the fuel economy is not where I expected it.
Considering I’m doing long stretches on the highway at a consistent speed.
I probably won’t be able to find a dealer until Monday. In the meantime I’d like to narrow down what’s going on.
I changed the spark plugs and all coils last Tuesday and I’ve been driving it since then without an issue.
I have some basic tools with me.
Any suggestions?
Thanks for the help.
It’s telling me I have a PO303 misfire cylinder 3.
Also noticed that Eco mode is not switching on.
The truck still seems to be driving pretty well although the fuel economy is not where I expected it.
Considering I’m doing long stretches on the highway at a consistent speed.
I probably won’t be able to find a dealer until Monday. In the meantime I’d like to narrow down what’s going on.
I changed the spark plugs and all coils last Tuesday and I’ve been driving it since then without an issue.
I have some basic tools with me.
Any suggestions?
Thanks for the help.